Member Technical Staff Interview Questions

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coding round - two questions - 1.5 hours time - hacker rank 1) find the pair of indexes in an array whose values sum equal given number - duplicate pairs not allowed 2) Special key board contains special keys problem ...something like special keys are "A", "Ctrl+A", "Ctrl+C", "Ctr+V", Input is number of keystrokes-Need to find how many "A"'s could appear on the screen using these special keys Technical Round -1 1) Given a singly linked list , given input n, -- Need to reverse every n nodes in the linked list -- in other words (Reverse a Linked List in groups of given size) 2) Check wheter given tree is symmetric or not 3) Give any data structure of complexity o(1) 4) Celebrity with millions of followers - updates some page, how does it reach ..technology behind it. Round 2: 1) Reverse sub strings of given String Eg: "My name is Salesforce" output : "Salesforce is name My" 2) An array contains some integers, Need to find the index at which sum of left indexes equal to sum of right indexes Eg { 1, 2, 5, 1,2,6} --> index is 3( sum is 8 to left and right } 3) Least common ancestor 4) Design chat application
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Senior Member of Technical Staff

Interviewed at Salesforce

4
Sep 21, 2019

coding round - two questions - 1.5 hours time - hacker rank 1) find the pair of indexes in an array whose values sum equal given number - duplicate pairs not allowed 2) Special key board contains special keys problem ...something like special keys are "A", "Ctrl+A", "Ctrl+C", "Ctr+V", Input is number of keystrokes-Need to find how many "A"'s could appear on the screen using these special keys Technical Round -1 1) Given a singly linked list , given input n, -- Need to reverse every n nodes in the linked list -- in other words (Reverse a Linked List in groups of given size) 2) Check wheter given tree is symmetric or not 3) Give any data structure of complexity o(1) 4) Celebrity with millions of followers - updates some page, how does it reach ..technology behind it. Round 2: 1) Reverse sub strings of given String Eg: "My name is Salesforce" output : "Salesforce is name My" 2) An array contains some integers, Need to find the index at which sum of left indexes equal to sum of right indexes Eg { 1, 2, 5, 1,2,6} --> index is 3( sum is 8 to left and right } 3) Least common ancestor 4) Design chat application

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